Ab international 1590 b brochure

Page 1

MODEL 1590B
PROFESSIONAL

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The AB International Professional Serie51590B is
a two channel stereo amplifier. This compact
(two rack unit) instrument features individual
channel level controls and 11 LED display,1/4"
jack inputs (unbalanced), XLR inputs (balanced),
ground lift switch, and a Stereo/Bridge switch.
The159OB delivers 500 Watts per channel into 8
Ohm, 800 Watts per channel into 4 Ohm, and
1050 Watts into 2 Ohm from 20Hz-20KHz at .1 %
distortion.

The159OB employs only 20dB of negitive feed-
back to reduce forward transfer distortion compo-
nents to minimum levels. VI energy limiters are
incorporated for short- circuit protection and a
thermal sensor prevents an over-temperature
condition.

Other features includes three dual speed temperature

actuated DC fans, " Soft Clip" speaker protection
circuitry, selectable input sensitivity, and a fully
modular construction for service accessibility.

The AB International Model 15908 features the
"Logic Operated Gated Output" supply system.

High current , fully complimentary output stages are

powered by dual tri-level supplies that gate the
operating voltages around the output wave form.
This is used to control and eliminate unused and
inefficient headroom.

The159OB operates from 100-240V 50-60Hz AC

mains and measures3 1/2 " high (two rack unit), 19"

wide and 15 " deep.

Page 2

AB MODEL 1590B SPECIFICATIONS

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Type:

Continuous
Power Output
Per Channel
20Hz to ZOKHz:

Frequency
Response:
Distortion:

Hum & Noise:

Input Sensitivity:
Input Connectors:

Output Connect:

Control &
Indicators:

Damping Factor:

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8 S9 8

Two channel amplifier

500w into 8 Ohms
800w into 4 Ohms
1050w into 2 Ohms

1300w 8 ohms Bridged
1650w 4 ohms Bridged
Plus/minus 0.25dB ZO-ZOkHZ

No more than 0.1% THD or
IM 0.01 to rated output.

101 dB below rated output
(unweighted, ZOkHz band-
width)

1.0V RMS for rated output
(selectable) .775V,1.0V,1.5V
1/ " phone jack (balanced)
XLR (balanced)

5-way binding posts

(Front panel) AC mains power
switch, power on LED, level
controls, 11 LED displays,
(Rear panel) ground lift
switch, stereo/bridged/parallel
switch

100011 at lkHz

Slew Rate:

Crosstalk:
Gain:
Mainframe
Power

Supply:

Tum-On Delay:

Power
Requirements:

Thermal
Protection:

DC Protection:
lIeatsink and
Cooling:

Construction:

Dimensions:

Weight:

Closed-loop response greater
than 40V per microsecond
-80dB

36dB

Toroidal transformer

4EA (20,000 uf) capacitors

3 sec., solid-state actuated
AC Mains- 100-240VAC
50/60Hz@15A/7.5A

Thermal sensor activates
channel shutdown if an over-
heating condition exists

DC sensor activates channel
shutdown if DC condition
exists, Soft clip protection
Dual speed fans providing
extra power handling utilizing
massive heatsink extrusions
l4-gauge cold-rolled steel with
3/16" heavy aluminum front
panel

Slimline 3 1/2" height, 19"
standard rack mount width,
15" depth overall

(less handles)

39 lbs. (17.72 kg)

AB INTERNATIONAL ELECTRONICS INC

PH: (916) 783-7800 e-mail: sales@abamps.com
1830-6 Vernon St., PO Box I l05, Roseville, CA 95678 FAX: (916)784-l050 http;www.abarnps.com